// Copyright (c) 2012 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

#include "ui/aura/client/visibility_client.h"

#include "ui/aura/window_event_dispatcher.h"
#include "ui/aura/window_property.h"

DECLARE_WINDOW_PROPERTY_TYPE(aura::client::VisibilityClient*)

namespace aura {
namespace client {

    // A property key to store a client that handles window visibility changes.
    DEFINE_LOCAL_WINDOW_PROPERTY_KEY(
        VisibilityClient*, kWindowVisibilityClientKey, NULL);

    void SetVisibilityClient(Window* window, VisibilityClient* client)
    {
        window->SetProperty(kWindowVisibilityClientKey, client);
    }

    VisibilityClient* GetVisibilityClient(Window* window)
    {
        VisibilityClient* visibility_client = NULL;
        aura::Window* current = window;
        do {
            visibility_client = current->GetProperty(kWindowVisibilityClientKey);
            current = current->parent();
        } while (current && !visibility_client);
        return visibility_client;
    }

} // namespace client
} // namespace aura
